Xylanase 11C from Talaromyces cellulolyticus (formerly known as Acremonium cellulolyticus)

Experimental Data Snapshot

  • Resolution: 1.98 Å
  • R-Value Free: 0.277 
  • R-Value Work: 0.232 
  • R-Value Observed: 0.234 

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This is version 1.2 of the entry. See complete history


Crystal structure of Talaromyces cellulolyticus (formerly known as Acremonium cellulolyticus) GH family 11 xylanase

Kataoka, M.Akita, F.Maeno, Y.Inoue, B.Inoue, H.Ishikawa, K.

(2014) Appl Biochem Biotechnol 174: 1599-1612

  • DOI: https://doi.org/10.1007/s12010-014-1130-9
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 

    Talaromyces cellulolyticus (formerly known as Acremonium cellulolyticus) is one of the mesophilic fungi that can produce high levels of cellulose-related enzymes and are expected to be used for the degradation of polysaccharide biomass. In silico analysis of the genome sequence of T. cellulolyticus detected seven open reading frames (ORFs) showing homology to xylanases from glycoside hydrolase (GH) family 11. The gene encoding the GH11 xylanase C (TcXylC) with the highest activity was used for overproduction and purification of the recombinant enzyme, permitting solving of the crystal structure to a resolution of 1.98 Å. In the asymmetric unit, two kinds of the crystal structures of the xylanase were identified. The main structure of the protein showed a β-jelly roll structure. We hypothesize that one of the two structures represents the open form and the other shows the close form. The changing of the flexible region between the two structures is presumed to induce and accelerate the enzyme reaction. The specificity of xylanase toward the branched xylan is discussed in the context of this structural data and by comparison with the other published structures of xylanases.

  • Organizational Affiliation

    Biomass Refinery Research Center, National Institute of Advanced Industrial Science and Technology (AIST), 3-11-32, Kagamiyama, Higashihiroshima, Hiroshima, 739-0046, Japan.

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
A, B
207Talaromyces funiculosusMutation(s): 4 
Gene Names: xynC
Find proteins for Q9HFH0 (Talaromyces funiculosus)
Explore Q9HFH0 
Go to UniProtKB:  Q9HFH0
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ9HFH0
Sequence Annotations
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Resolution: 1.98 Å
  • R-Value Free: 0.277 
  • R-Value Work: 0.232 
  • R-Value Observed: 0.234 
  • Space Group: P 1 21 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 40.513α = 90
b = 60.108β = 99.07
c = 106.982γ = 90
Software Package:
Software NamePurpose
SCALEPACKdata scaling
PDB_EXTRACTdata extraction
HKL-2000data collection
DENZOdata reduction

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2014-11-26
    Type: Initial release
  • Version 1.1: 2017-11-22
    Changes: Refinement description
  • Version 1.2: 2024-03-20
    Changes: Data collection, Database references